well, from what i hear there is either a pill that will almost destroy your liver, and there's a nail polish type of thing.

Buy a SMALL jar of Vicks Vapor Rub and rub a small amount onto the affected toenail two or three times a day. It will take several months but you will notice the fungus, which appears as a line in/under the toenail, eventually fades and the nail will grow out without the fungus. this does work; my M.D. told me about it and it has worked for me.